Filter Service Life:6 to 18 months maximum, Filter life varies and will be determine based on of the feed water quality and amount water the machine produce.
I changed the 5th filter in my 5 filter R.O. system with this one, and I'm very impressed! I had done an acidity test on my water in the past and was disappointed how acidic a Reverse Osmosis system made the water. After installing this filter, it was completely alkaline! I've noticed a softer, smoother taste, and most importantly I don't get acid reflux anymore, which happened every time I drank the old water. I HIGHLY recommend it!Reviewed by: Shane Gagnon from Welland, ON. on 11/22/2012